解算器
玻尔兹曼方程
计算
声子
热导率
计算科学
瞬态(计算机编程)
对流扩散方程
计算机科学
格子Boltzmann方法
稳态(化学)
统计物理学
物理
机械
算法
热力学
化学
凝聚态物理
物理化学
操作系统
程序设计语言
作者
Yue Hu,Ru Jia,Jiaxuan Xu,Yufei Sheng,Minhua Wen,James Lin,Yongxing Shen,Hua Bao
标识
DOI:10.1088/1361-648x/acfdea
摘要
Advances in nanotechnology have facilitated the exploration of submicron thermal transport. At this scale, Fourier's law is no longer applicable, and the governing equation for thermal transport is the phonon Boltzmann transport equation (BTE). However, the availability of open-source solvers for the phonon BTE is limited, impeding progress in this field. This study introduces an open-source package, GiftBTE, for numerically solving the non-gray phonon BTE. GiftBTE employs deterministic solutions and provides both steady-state and transient solvers. For the steady-state solver, GiftBTE employs the implicit discrete ordinates method (DOM) with second-order spatial accuracy and the synthetic iterative scheme. For the transient solver, GiftBTE employs the explicit DOM with second-order spatial accuracy. This package demonstrates excellent computational efficiency, enabling realistic three-dimensional simulations of devices and materials. By interfacing with first-principles calculations, this solver enables parameter-free computation of submicron thermal transport. The application of GiftBTE includes, but is not limited to, computing the thermal conductivity of nanostructures, predicting temperature rises in transistors, and simulating laser heating processes.
科研通智能强力驱动
Strongly Powered by AbleSci AI